Análise estrutural não linear pelo metodo dos elementos finitos utilizando-se relaxação viscosa acelerada

Neste trabalho discute-se a utilizacfio da técnica de relaxacáo viscosa para a solucao de equacoes do método dos elementos finitos, visando-se a sua implementacao em computadores de processamento paralelo/vetorial. Os problemas de convergencia e número de iteracoes foram minimizados de modo a obter-se um algoritmo seguro e versátil, que oferece as seguintes vantagens: simplicidades de implementacáo , reduzida memória central e facilidade de refinamento e modificacóes da malha. Sfio apresentados estudos relativos a dois casos clássicos de leitura, tanto em regime linear quanto elástico plástico.This paper discusses the implementation of the accelerated viscous relaxation technique to be used in nonlinear finite element analysis on vector/parallel computers. The resulted approach have significant advantages: reduced central storage, great efficiency and the suitability for adaptative finite element analysis. Two classic elasto-plastic cases are studied and the obtained performance are examined for the linear and nonlinear ranges. 1s the authors opinion that the generated software can be considered as an engineering tool to treat complex problems with economy and versatility.Peer Reviewe

Análise estrutural não linear pelo metodo dos elementos finitos utilizando-se relaxação viscosa acelerada

Neste trabalho discute-se a utilizacfio da técnica de relaxacáo viscosa para a solucao de equacoes do método dos elementos finitos, visando-se a sua implementacao em computadores de processamento paralelo/vetorial. Os problemas de convergencia e número de iteracoes foram minimizados de modo a obter-se um algoritmo seguro e versátil, que oferece as seguintes vantagens: simplicidades de implementacáo , reduzida memória central e facilidade de refinamento e modificacóes da malha. Sfio apresentados estudos relativos a dois casos clássicos de leitura, tanto em regime linear quanto elástico plástico.This paper discusses the implementation of the accelerated viscous relaxation technique to be used in nonlinear finite element analysis on vector/parallel computers. The resulted approach have significant advantages: reduced central storage, great efficiency and the suitability for adaptative finite element analysis. Two classic elasto-plastic cases are studied and the obtained performance are examined for the linear and nonlinear ranges. 1s the authors opinion that the generated software can be considered as an engineering tool to treat complex problems with economy and versatility.Peer Reviewe

Count Data Regression Analysis: Concepts, Overdispersion Detection, Zero-inflation Identification, and Applications with R

In this paper is proposed a straightforward model selection approach that indicates the most suitable count regression model based on relevant data characteristics. The proposed selection approach includes four of the most popular count regression models (i.e. Poisson, negative binomial, and respective zero-inflated frameworks). Moreover, it addresses two of the most relevant problems commonly found in real-world count datasets, namely overdispersion and zero-inflation. The entire selection approach may be performed using the programme language R, being all commands used throughout the paper availabe for practical purposes. It is worth mentioning that counting regression models are still not widespread within the social sciences

O jovem Engels e o Esboço da crítica da economia política, de 1844

Resumo: O seguinte artigo visa reconstituir parcialmente o percurso político e teórico de Friedrich Engels entre os anos de 1838-1844, a fim de compreender a adesão deste ao movimento operário europeu e a proposta de iniciar um programa de investigação e revisão crítica dos pressupostos da economia política clássica conforme apresentado no ensaio Umrisse zu einer Kritik der Nationalökonomie [Esboço de uma crítica da Economia Política] [1844]. O valor do Esboço de 1844 deve-se a significativa relevância deste na iniciação de Karl Marx nos estudos da economia política, que décadas mais tarde resultaria em sua magnum opus, O Capital. O artigo divide-se em três partes: (1) síntese da história e do desenvolvimento da economia política anterior a 1844; (2) resumo biográfico de Engels entre os anos de 1838-1844; (3) comentários sobre o Esboço de 1844, destacando seu pioneirismo para a futura crítica marxiana da economia política. Abstract: The following article aims at partially reconstructing Friedrich Engels’ political and theoretical course between the years 1838-1444, in order to understand his adherence to the European labor movement and the proposal to initiate a program of investigation and critical review of the presuppositions of classical political economy as presented in the essay Umrisse zu einer Kritik der Nationalökonomie [Outlines of a Critique of Political Economy] [1844]. The value of the 1844 Outline is due its relevance in the initiation of Karl Marx in the studies of the political economy, that decades later would result in its magnum opus, Capital. The article is divided into three parts: (1) synthesis of the history and development of political economy prior to 1844; (2) biographical summary of Engels between the years 1838-1844; (3) comments on the 1844 Outline, highlighting its pioneering approach to the future Marxian critique of political economy

(-)-tarchonanthuslactone Exerts A Blood Glucose-increasing Effect In Experimental Type 2 Diabetes Mellitus

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)A number of studies have proposed an anti-diabetic effect for tarchonanthuslactone based on its structural similarity with caffeic acid, a compound known for its blood glucose-reducing properties. However, the actual effect of tarchonanthuslactone on blood glucose level has never been tested. Here, we report that, in opposition to the common sense, tarchonanthuslactone has a glucose-increasing effect in a mouse model of obesity and type 2 diabetes mellitus. The effect is acute and non-cumulative and is present only in diabetic mice. In lean, glucose-tolerant mice, despite a slight increase in blood glucose levels, the effect was not significant.20350385049Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Institute of Chemistry/UNICAMPFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)FAPESP [proc. 13/07607-8]FAPESP [11/50514-5, 12/09254-2, 10/08673-6, 2009/53606-8

Bacteriological evaluation in Salmon (Salmo salar) benefit in fish's warehouse in Rio de Janeiro, Brazil.

The consumption of raw fish is increasing in Brazil however it may present a higher risk to public health, because its integrity depends only on proper handling and storage. Hence, the use of effective means to ensure the safety of the product is extremely important. The aim of this investigation was to carry out microbiological analysis of salmon (Salmosalar) before and after the processing in a fish industry. The microbiological analyzes were: Salmonella spp(SS), Staphylococcus aureus (SA), total coliforms (TC), Escherichia coli (EC) and Aerobic Mesophilic Heterotrophic Bacteria (AMHB). The raw material and the final product had low levels of AMHB and SA. TC was in low concentration only in the final product. The SS and EC bacteria were not isolated. It is suggested that fish industries with ?good processing practices? can produce suitable raw fish to fresh consumption

Anterior Hepatic Transection for Caudate Lobectomy

Resection of the caudate lobe (segment I- dorsal sector, segment IX- right paracaval region, or both) is often technically difficult due to the lobe’s location deep in the hepatic parenchyma and because it is adjacent to the major hepatic vessels (e.g., the left and middle hepatic veins)

Possibilidades de gestão compartilhada na perspectiva de um olhar sistêmico sobre a cultura

O artigo apresenta reflexões e discussões sobre algumas possibilidades de compartilhamento na construção e gestão pública de sistemas de cultura no Brasil. Aborda o Sistema Nacional de Cultura, articulando-o com sistemas estadual e municipais, a partir de exemplos do estado do Rio de Janeiro, trazendo algumas reflexões sobre a construção compartilhada de planos de cultura e de conselhos municipais de políticas culturais, assim como da realização de conferências municipais de cultura

Physics informed neural networks learning a two-qubit Hamiltonian

Machine learning techniques are employed to perform the full characterization of a quantum system. The particular artificial intelligence technique used to learn the Hamiltonian is called physics informed neural network (PINN). The idea behind PINN is the universal approximation theorem, which claims that any function can be approximate by a neural network if it contains enough complexity. Consequently, a neural network can be a solution of a physical model. Moreover, by means of extra data provided by the user, intrinsic physical parameters can be extracted from the approach called inverse-PINN. Here, we apply inverse-PINN with the goal of extracting all the physical parameters that constitutes a two qubit Hamiltonian. We find that this approach is very efficient. To probe the robustness of the inverse-PINN to learn the Hamiltonian of a two-qubit system, we use the IBM quantum computers as experimental platforms to obtain the data that is plugged in the PINN. We found that our method is able to predict the two-qubit parameters with 5% of accuracy on average.Comment: 5 pages, 4 figure

Estudo prévio de uma unidade industrial para produção de vinagrete sólido

Este trabalho consiste num estudo prévio tendo em vista o projeto de uma unidade industrial para a produção de vinagrete sólido. O produto em causa, o vinagrete sólido, assume-se como inovador, colocando-se como uma alternativa fácil para o tempero de saladas e potenciando novos sabores agradáveis ao paladar que cativem o consumidor. O trabalho inclui o estudo do processo, com descrição das etapas de preparação, os balanços mássicos, a descrição das peças de equipamento, a implantação fabril e uma breve estimativa do investimento necessário